Abstract:
Radial velocities of the primary component (B8V) of HU Tauri derived from the photographic
spectra obtained during January 1974 to December 1974 and spectroscopic orbital elements from the
analysis of the radial velocity curve of the B8V primary are given. The Hα line of the late type
secondary component is clearly detected on the photographic spectra taken around the quadratures
and radial velocities of the secondary component are derived. The radial velocity semi amplitudes of
the primary (K1) and secondary (K2) are found to be 60 km/sec and 234 km/sec respectively. The
mass ratio M2/M1 = K1/K2 is found to be 0.2564. The detection of the Hα line of the secondary is
confirmed from the high resolution spectra that I obtained during 1981 and 1983 at quadratures using
the 2.1-m McDonald observatory Otto Struve reflector telescope and high resolution coud´e Reticon
spectrograph.
